:root{--bg-0: #0b0b0f;--bg-1: #16161d;--bg-2: #1f1f29;--bg-3: #2a2a37;--line: rgba(255, 255, 255, .08);--text-1: #f5f5f7;--text-2: #b6b6c2;--text-3: #7c7c89;--brand-1: #ff6ec7;--brand-2: #8a6cff;--brand-3: #4ea3ff;--gradient: linear-gradient(135deg, #ff6ec7 0%, #8a6cff 50%, #4ea3ff 100%);--success: #4ade80;--warning: #fbbf24;--danger: #f87171;--shadow-1: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.3);--shadow-2: 0 4px 16px rgba(138, 108, 255, .25)}*{box-sizing:border-box;-webkit-font-smoothing:antialiased}html,body,#root{height:100%;margin:0;padding:0}body{background:var(--bg-0);color:var(--text-1);font-family:Noto Sans TC,Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:15px;line-height:1.6;overflow:hidden}button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}input,textarea{font-family:inherit}.app{display:flex;height:100vh;background:radial-gradient(circle at 0% 0%,rgba(138,108,255,.08),transparent 50%),radial-gradient(circle at 100% 100%,rgba(255,110,199,.06),transparent 50%),var(--bg-0)}.sidebar{width:280px;background:var(--bg-1);border-right:1px solid var(--line);display:flex;flex-direction:column;flex-shrink:0;transition:width .2s ease}.sidebar.collapsed{width:64px}.sidebar-header{padding:20px 16px;display:flex;align-items:center;gap:12px}.logo{width:36px;height:36px;border-radius:10px;background:var(--gradient);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}.logo-text{font-size:16px;font-weight:600;letter-spacing:.02em;white-space:nowrap}.sidebar.collapsed .logo-text,.sidebar.collapsed .sidebar-section-title,.sidebar.collapsed .nav-item span,.sidebar.collapsed .song-mini-title,.sidebar.collapsed .new-btn span{display:none}.new-btn{margin:8px 12px 16px;padding:12px 16px;border-radius:28px;background:var(--gradient);color:#fff;font-weight:600;display:flex;align-items:center;gap:8px;justify-content:center;font-size:14px;box-shadow:var(--shadow-2);transition:transform .1s ease}.new-btn:hover{transform:translateY(-1px)}.new-btn:active{transform:translateY(0)}.sidebar-section{padding:12px 12px 4px}.sidebar-section-title{font-size:11px;color:var(--text-3);text-transform:uppercase;letter-spacing:.06em;padding:6px 12px;font-weight:600}.sidebar-list{flex:1;overflow-y:auto;padding:0 8px 16px}.nav-item{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:10px;color:var(--text-2);font-size:14px;text-align:left;width:100%;cursor:pointer;transition:background .15s 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#8a6cff59,0 0 0 1px #ffffff0f}.welcome-greeting{font-size:48px;font-weight:500;letter-spacing:-.01em;line-height:1.2;background:var(--gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.welcome-sub{font-size:16px;color:var(--text-3);max-width:520px}.example-chips{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;max-width:760px}.desktop-producer-picker{width:min(820px,100%);margin:0 auto;display:grid;grid-template-columns:220px minmax(0,1fr);gap:18px;align-items:center;padding:18px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(135deg,#ffffff0d,#ffffff05),#16161dc2;box-shadow:var(--shadow-1)}.desktop-producer-picker-composer{width:min(820px,calc(100% - 48px));margin:0 auto 8px;padding:14px 16px;grid-template-columns:180px minmax(0,1fr);border-radius:16px}.desktop-producer-copy{text-align:left;min-width:0}.desktop-producer-eyebrow{color:var(--brand-1);font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.desktop-producer-copy h2{margin:4px 0;font-size:18px;line-height:1.25}.desktop-producer-copy p{margin:0;color:var(--text-3);font-size:13px;line-height:1.5}.desktop-producer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.desktop-producer-card{min-width:0;min-height:74px;display:flex;align-items:center;gap:10px;padding:12px;border-radius:14px;background:#ffffff0b;border:1px solid rgba(255,255,255,.08);color:var(--text-1);text-align:left;transition:border-color .15s,background .15s,transform .15s}.desktop-producer-card:hover:not(:disabled){background:#ffffff13;border-color:#8b5cf66b;transform:translateY(-1px)}.desktop-producer-card.selected{border-color:var(--giftback-purple);background:#8b5cf629;box-shadow:0 0 0 3px #8b5cf61f}.desktop-producer-card .producer-icon{flex:0 0 auto}.desktop-producer-card .producer-name,.desktop-producer-card .producer-tagline{display:block}.chip{padding:14px 20px;border-radius:16px;background:var(--bg-1);border:1px solid var(--line);color:var(--text-2);font-size:14px;text-align:left;max-width:240px;transition:all .2s ease;line-height:1.45}.chip:disabled{opacity:.45;cursor:not-allowed;transform:none}.chip:hover{background:var(--bg-2);color:var(--text-1);border-color:#8a6cff66;transform:translateY(-2px)}.msg{display:flex;gap:14px}.msg-avatar{width:36px;height:36px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:600}.msg-avatar.user{background:var(--bg-3);color:var(--text-1)}.msg-avatar.assistant{background:var(--gradient);color:#fff}.msg-body{flex:1;min-width:0}.msg-name{font-size:13px;color:var(--text-3);margin-bottom:4px;font-weight:500}.msg-content{font-size:15px;color:var(--text-1);line-height:1.7;white-space:pre-wrap;word-break:break-word}.generating{display:flex;align-items:center;gap:12px;padding:14px 18px;background:var(--bg-1);border:1px solid var(--line);border-radius:14px;margin-top:8px;width:fit-content}.spinner{width:18px;height:18px;border:2px solid var(--bg-3);border-top-color:var(--brand-2);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.gen-step{font-size:14px;color:var(--text-2)}.song-card{background:var(--bg-1);border:1px solid var(--line);border-radius:18px;overflow:hidden;margin-top:8px;box-shadow:var(--shadow-1);animation:fadeIn .4s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.song-card-head{display:flex;gap:16px;padding:20px}.song-cover{width:96px;height:96px;border-radius:12px;background:var(--gradient);background-size:cover;background-position:center;flex-shrink:0;position:relative;overflow:hidden}.song-cover:after{content:"🎵";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:32px;opacity:.4}.song-cover[data-has-img=true]:after{display:none}.song-meta{flex:1;min-width:0}.song-title{font-size:20px;font-weight:600;margin:0 0 6px;letter-spacing:-.01em}.song-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}.tag{padding:3px 10px;border-radius:12px;background:var(--bg-3);color:var(--text-2);font-size:11px}.song-mood{font-size:13px;color:var(--text-3)}.song-actions{display:flex;gap:8px;padding:0 20px 16px;flex-wrap:wrap}.action-btn{padding:8px 14px;border-radius:10px;background:var(--bg-2);color:var(--text-1);font-size:13px;font-weight:500;display:flex;align-items:center;gap:6px;transition:background .15s ease}.action-btn:hover{background:var(--bg-3)}.action-btn.primary{background:var(--gradient);color:#fff}.action-btn.primary:hover{filter:brightness(1.1)}.action-btn.danger{color:var(--danger)}.published-badge{padding:4px 10px;border-radius:12px;background:#4ade8026;color:var(--success);font-size:11px;font-weight:600;display:inline-flex;align-items:center;gap:4px;margin-left:8px}.tracks-row{display:flex;gap:8px;padding:16px 20px 20px;border-top:1px solid var(--line);margin-top:4px}.track-tab{padding:6px 12px;border-radius:8px;font-size:12px;color:var(--text-2);background:var(--bg-2)}.track-tab.active{background:var(--bg-3);color:var(--text-1)}.lyrics-toggle{padding:0 20px 16px}.lyrics-toggle summary{cursor:pointer;font-size:13px;color:var(--text-3);padding:8px 0;list-style:none}.lyrics-toggle summary::-webkit-details-marker{display:none}.lyrics-toggle summary:before{content:"▶ ";display:inline-block;transition:transform .2s}.lyrics-toggle[open] summary:before{transform:rotate(90deg)}.lyrics-body{background:var(--bg-2);padding:16px;border-radius:10px;font-size:13px;line-height:1.9;color:var(--text-2);white-space:pre-wrap;margin-top:8px}.player{display:flex;align-items:center;gap:12px;padding:14px 20px;background:var(--bg-2);border-top:1px solid var(--line)}.play-btn{width:40px;height:40px;border-radius:50%;background:var(--gradient);color:#fff;font-size:16px;display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:var(--shadow-2)}.player-track{flex:1;display:flex;flex-direction:column;gap:4px;min-width:0}.player-progress{height:4px;background:var(--bg-3);border-radius:2px;overflow:hidden;cursor:pointer}.player-progress-fill{height:100%;background:var(--gradient);transition:width .1s linear}.player-time{display:justify-content: space-between;font-size:11px;color:var(--text-3);font-variant-numeric:tabular-nums}.composer{padding:16px 24px 24px;flex-shrink:0}.composer-inner{max-width:820px;margin:0 auto;background:var(--bg-1);border:1px solid var(--line);border-radius:28px;padding:8px 8px 8px 20px;display:flex;align-items:flex-end;gap:8px;transition:border-color .2s,box-shadow .2s}.composer-inner:focus-within{border-color:#8a6cff80;box-shadow:0 0 0 4px #8a6cff1a}.composer 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.messages{flex:none;overflow:visible;padding-top:8px}.giftback-studio{max-width:800px;margin:0 auto;padding:20px 16px 40px}.giftback-header{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:12px 20px;align-items:center;margin-bottom:28px}.giftback-header-top{display:contents}.giftback-brand{display:flex;align-items:center;gap:12px;grid-column:1;grid-row:1;min-width:0;flex:1 1 auto}.giftback-brand-copy{min-width:0}.brand-mark{display:block;object-fit:cover;flex-shrink:0}.giftback-logo{width:48px;height:48px;border-radius:12px;box-shadow:0 4px 16px #8a6cff40}.giftback-brand-name{font-size:18px;font-weight:700;letter-spacing:.04em;line-height:1.2;white-space:nowrap}.giftback-brand-sub{font-size:10px;color:var(--text-3);letter-spacing:.12em;text-transform:uppercase;margin-top:2px}.giftback-slogan{grid-column:2;grid-row:1;margin:0;font-size:14px;color:var(--text-1);line-height:1.5;max-width:100%;padding:0 12px;text-align:center;white-space:normal;overflow-wrap:anywhere;word-break:normal}.giftback-menu-btn{width:44px;height:44px;min-width:44px;border-radius:12px;background:var(--giftback-panel);border:1px solid var(--giftback-panel-border);font-size:20px;display:flex;align-items:center;justify-content:center;flex:0 0 auto;line-height:1}.giftback-actions{grid-column:3;grid-row:1;display:flex;flex-direction:row;align-items:center;justify-content:flex-end;flex-wrap:nowrap;gap:8px;max-width:100%;min-width:max-content;flex:0 0 auto}.giftback-back-btn{padding:8px 14px;border-radius:10px;background:var(--bg-2);color:var(--text-1);font-size:14px}.giftback-step{margin-bottom:28px}.giftback-step-title{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600;margin:0 0 14px;color:var(--text-1)}.giftback-step-num{width:26px;height:26px;border-radius:50%;background:var(--giftback-purple);color:#fff;font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}.giftback-panel{background:var(--giftback-panel);border:1px solid var(--giftback-panel-border);border-radius:16px;padding:20px}.giftback-label{display:block;font-size:14px;color:var(--text-2);margin-bottom:12px}.giftback-textarea,.giftback-input{width:100%;background:var(--giftback-input);border:1px solid var(--giftback-panel-border);border-radius:12px;color:var(--text-1);font-size:15px;padding:14px 16px;outline:none;transition:border-color .2s}.giftback-textarea{min-height:140px;resize:vertical;line-height:1.6;margin-bottom:16px}.giftback-textarea::placeholder,.giftback-input::placeholder{color:var(--text-3)}.giftback-textarea:focus,.giftback-input:focus{border-color:#8b5cf680}.giftback-input{margin-bottom:20px}.giftback-input-prompt{min-height:48px;resize:none;line-height:1.5}.giftback-subheading{font-size:14px;font-weight:600;color:var(--text-1);margin:0 0 14px}.giftback-subheading-first{margin-top:0}.giftback-textarea-single{margin-bottom:20px}.giftback-btn-generate-single{margin-top:0}.giftback-btn{width:100%;min-height:48px;border-radius:12px;font-size:15px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:8px;transition:background .15s,opacity .15s}.giftback-btn:disabled{opacity:.45;cursor:not-allowed}.giftback-btn-primary{background:var(--giftback-purple);color:#fff}.giftback-btn-primary:not(:disabled):hover{background:var(--giftback-purple-hover)}.giftback-btn-generate{background:#9ca3af;color:#1a1a24;margin-top:20px}.giftback-btn-generate:not(:disabled){background:#d1d5db;color:#111827}.giftback-btn-generate:not(:disabled):hover{background:#e5e7eb}.giftback-btn-icon{font-size:16px}.producer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.producer-card{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;padding:14px 8px;border-radius:12px;background:#252530;border:2px solid transparent;min-height:100px;transition:border-color .15s,background .15s}.producer-card:hover:not(:disabled){background:#2e2e3a}.producer-card.selected{border-color:var(--giftback-purple);background:#8b5cf61f}.producer-icon{width:36px;height:36px;border-radius:50%;background:var(--bg-3);display:flex;align-items:center;justify-content:center;font-size:18px}.producer-name{font-size:13px;font-weight:700;color:var(--text-1)}.producer-tagline{font-size:11px;color:var(--text-3);line-height:1.3}@media(min-width:640px)and (max-width:1023px){.giftback-header{grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px 16px}.giftback-brand{grid-column:1;grid-row:1}.giftback-slogan{grid-column:2;grid-row:1;text-align:center;font-size:15px;max-width:100%;padding:0 10px}.giftback-actions{grid-column:3;grid-row:1}.giftback-studio{padding:24px 24px 48px}.producer-grid{gap:12px}}@media(max-width:639px){.giftback-studio{padding:16px 12px 32px;width:95%;max-width:none}.giftback-header{display:flex;flex-direction:column;align-items:stretch;gap:12px}.giftback-header-top{display:flex;align-items:center;justify-content:space-between;width:100%;gap:12px;min-width:0}.giftback-brand{flex:1 1 auto;min-width:0}.giftback-brand-copy{min-width:0}.giftback-brand-name,.giftback-brand-sub{overflow:hidden;text-overflow:ellipsis}.giftback-actions{flex:0 0 auto;min-width:max-content;justify-content:flex-end;align-items:center;flex-wrap:nowrap;gap:8px}.giftback-slogan{width:100%;max-width:100%;margin:0;padding:0 4px;text-align:center;white-space:normal;overflow-wrap:anywhere;word-break:normal;line-height:1.55}.beautiful-login-btn{min-height:38px;padding:8px 12px 8px 9px;font-size:13px}.giftback-menu-btn{width:40px;height:40px;min-width:40px;font-size:18px}.beautiful-login-btn .btn-icon{width:22px;height:22px}.producer-grid{grid-template-columns:repeat(2,1fr);gap:10px}.producer-card{min-height:108px;padding:16px 10px}.giftback-step{margin-bottom:22px}.giftback-textarea{min-height:120px}}@media(max-width:768px){.sidebar{width:64px}.sidebar .logo-text,.sidebar .sidebar-section-title,.sidebar .nav-item span,.sidebar .song-mini-title{display:none}.welcome-greeting{font-size:32px}.messages-inner,.composer-inner{padding-left:12px;padding-right:12px}.main-header{padding:12px 16px}}@media(max-width:1023px){.desktop-producer-picker{grid-template-columns:1fr}.desktop-producer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}.toast{position:fixed;bottom:32px;left:50%;transform:translate(-50%);padding:12px 20px;background:var(--bg-3);color:var(--text-1);border-radius:12px;font-size:14px;box-shadow:var(--shadow-1);z-index:100;animation:toastIn .3s ease}@keyframes toastIn{0%{opacity:0;transform:translate(-50%,12px)}to{opacity:1;transform:translate(-50%)}}.beautiful-login-btn{min-height:42px;flex:0 0 auto;background:linear-gradient(135deg,#ffffff29,#ffffff0d),#12121ab8;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.14);padding:9px 14px 9px 10px;border-radius:999px;color:var(--text-1);display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;font-size:14px;line-height:1;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 10px 28px #00000038,inset 0 1px #ffffff1f;white-space:nowrap;max-width:100%}.beautiful-login-btn:hover{background:linear-gradient(135deg,#8a6cff52,#ff6ec729),#181822db;border-color:#8a6cffb8;transform:translateY(-2px);box-shadow:0 6px 20px #8a6cff33}.beautiful-login-btn .btn-icon{width:24px;height:24px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--brand-2),var(--brand-1));color:#fff;flex:0 0 auto}.login-icon-svg{width:15px;height:15px}.beautiful-login-btn 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4px;font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--text-3);font-weight:600}.lib-menu-scroll{max-height:240px;overflow-y:auto}.lib-menu-empty{padding:8px 12px;font-size:12px;color:var(--text-3)}@media(max-width:768px){.lib-nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;padding:10px 12px 12px;overflow:visible}.lib-nav-back,.lib-nav-sep,.lib-nav-producer-desktop,.lib-nav-label{display:none}.lib-nav-producer-mobile,.lib-nav-mobile-label{display:block}.lib-nav-tab{width:100%;min-width:0;min-height:54px;justify-content:center;flex-direction:column;gap:4px;padding:8px 4px;border-radius:16px;border:1px solid rgba(255,255,255,.08);background:#ffffff0e;color:var(--text-2);font-size:11px;line-height:1.1;white-space:normal;overflow:visible;overflow-wrap:anywhere;box-shadow:inset 0 1px #ffffff0a}.lib-nav-tab.active{border-color:#ffffff2e;background:linear-gradient(135deg,#8b5cf6f2,#ec4899e0);color:#fff;box-shadow:0 10px 28px #8b5cf638}.lib-nav-tab:active{transform:translateY(1px) scale(.99)}.lib-nav-icon{width:20px;height:20px}.lib-nav-main .lib-nav-icon{display:block}.lib-nav-producer-mobile{position:relative;min-width:0}.lib-nav-active-dot{right:calc(50% - 21px);top:8px}.lib-producer-popover{right:0;top:calc(100% + 8px)}.np-bar{height:64px;grid-template-columns:1fr auto;padding:0 12px}.np-center{display:none}.np-right{gap:4px}.np-vol-track,.np-progress{display:none}.lib-table-head{font-size:10px}.lib-page-head{align-items:flex-start;flex-direction:column;gap:12px}.lib-page-head-actions{width:100%;justify-content:flex-start;flex-wrap:wrap}.lib-title{width:100%;font-size:clamp(28px,9vw,36px);letter-spacing:0;overflow-wrap:anywhere;word-break:normal;white-space:normal}.lib-table-head,.lib-row{grid-template-columns:36px 1fr 56px 36px;gap:8px}.col-producer,.col-date,.lib-row-producer,.lib-row-date{display:none}.queue-panel{width:calc(100% - 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20px}.lib-home-greeting,.lib-page{padding-left:16px;padding-right:16px}.lib-quick-hits{padding-left:16px;padding-right:16px;grid-template-columns:1fr}}